Throop ST over I- 57
Fair Condition61 years old950 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 1.5 M SW Il 1 |
| Carries | Throop ST |
| Crosses | I- 57 |
| Coordinates | 41.69996, -87.65477 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 263.5 ft (80.3 m) |
| Max Span | 136.5 ft (41.6 m) |
| Deck Width | 63.0 ft (19.2 m) |
| Deck Area | 1541.8 sq m |
| Main Spans | 2 |
| Year Built | 1965 (reconstructed 2004) |
Traffic
| Avg Daily Traffic | 950 (2022) |
| Truck Traffic | 11% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 6 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016203200000000 |